[rpc server]: Enable syncd-rpc target compilation.

[oleksandrivantsiv]

Export switch ID variable required by SAI thrift.

[pavel-shirshov]

Why do we need gSwitchId?

[pavel-shirshov]

What component does use the gSwitchId variable ?
I see you assign some value to it below, but how it is used?

[oleksandrivantsiv]

It is required by the latest SAI thrift implementation:
https://github.com/opencomputeproject/SAI/blob/master/test/saithrift/src/switch_sai_rpc_server.cpp#L80

[pavel-shirshov]

I'd better to make interface of SAI thrift implementation more explicit by introducing
switch_id parameter to start_sai_thrift_rpc_server() function.
But anyway.

[lguohan]

why PR build fails? what do I need to add?

[andrii-savka]

We need to reset src/SAI to 1.0.2 version. The following commit can damage the build:
_commit aac4d6e
Author: Yakiv Huryk yakivh@mellanox.com
Date: Sat Nov 18 12:35:41 2017 +0200

PTF: alignment with 1.2 headers & fixes (#736)_

If I reset the src/SAI to following commit 77b2ad2 then I have successfully built the image.

[lguohan]

retest this please

[andrii-savka]

@lguohan
It was build and re-tested on the latest source code.

[lguohan]

@andriis, the SAI commit id in the master is 40d7d66 2017-08-02 | add SAI_HOSTIF_ATTR_VLAN_TAG attribute to define whether to keep/strip (#699) (#700) (HEAD, origin/v1.0) [lguohan]

it does not have 77b2ad2 in its history. The master is still SAI 1.0, not SAI 1.2.

[andrii-savka]

@lguohan
The build is failing because of syncd can't include "switch_sai_rpc_server.h" from SAI.
I don't have such error in my local build.
Probably, we need to update SAI.
I'm investigating how to fix it.

[andrii-savka]

@lguohan
The flow to build syncd with SAI thrift is the same.
Could you check whether SAI which is used by Jenkins has a "switch_sai_rpc_server.h" thrift headers?

[pavel-shirshov]

This build requires libsaithrift-dev. This library build was broken when we migrate from 0.9.4 to 1.0.2.
I'll try to fix the whole build process in the buildimage repo first.
I'll write results here as soon as I found anything.

[pavel-shirshov]

Hi Guohan
You need to install libsaithrift-dev_1.0.4_amd64.deb
It should help you.

[andrii-savka]

Tested and created rebased PR: #281

[lguohan]

merged the #281